Carl C. Icahn reported buying more TWA stock.

Icahn, the New York corporate raider who won control of Trans World Airlines last month, continued to build up his stake in the airline, documents filed with the Securities and Exchange Commission showed. He now holds 18.27 million shares, or 52.52% of TWA, after buying 776,900 shares for between $22 and $22.25 a share late last week. After a long struggle to outbid Texas Air, Icahn gained a 50.3% controlling interest in TWA a week earlier.